Perhaps you should try some spelling variations:
"christology historical action" » "chronology historical action", "biology historical action", "lexicology historical action", "christology historical actions", "christology historical fiction", "christology historical section"
"history historical union" » "history history union", "history historical upon", "history historical notion", "history historical region"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("christology historical action") OR ("history historical union")).
• Removing quotes may allow a broader search: (( christology historical action ) or ( history historical union )).
• Adding a wildcard symbol may retrieve word variants: (("christology historical action") or ("history historical union"))*.